Home / 2,451.48-3,382.80-1,389.18

Finding the Fourth Proportional to 2,451.48, 3,382.80 and 1,389.18

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Solution

The fourth proportional to 2,451.48, 3,382.80 and 1,389.18 is: 1,916.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,451.48 : 3,382.80 = 1,389.18 : x
  2. Step 2: Convert to fraction form
    2,451.48/3,382.80 = 1,389.18/x
  3. Step 3: Cross multiply
    2,451.48x = 3,382.80 × 1,389.18
  4. Step 4: Simplify right side
    2,451.48x = 4,699,318.10
  5. Step 5: Solve for x
    x = 4,699,318.10/2,451.48
  6. Step 6: Final answer
    x = 1,916.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.